Johannesburg: Android Developer posted by Crayon Technologies Ltd

Note: This role is for one of our clients. While we do track apply clicks, you’ll need to complete the quick steps on Crayon for your application to be considered. How you’ll role As a Senior Android Developer, you’ll be part of a forward-thinking team responsible for developing high-quality, cutting-edge Android applications. Your primary focus will be on optimizing performance and enhancing the user experience by utilizing Kotlin, Java, and modern Android development tools. This is a 3-month contract role where you’ll work in a supportive environment fostering innovation and professional growth. What you’ll do Develop and maintain advanced Android applications using Kotlin and Java Implement modern UI with Jetpack Compose Utilize Android Jetpack Components for efficient app architecture Implement MVVM, MVI, and clean architecture design patterns Ensure optimal performance through effective concurrency and asynchrony using Kotlin Coroutines Integrate with back-end services utilizing Retrofit, OkHttp, WebSockets, and gRPC Implement an offline-first approach utilizing Room and SQLite for data management Prepare technical documentation and perform code reviews to ensure best practices Collaborate closely with cross-functional teams to define, design, and ship new features Identify and correct bottlenecks and fix bugs to ensure quality performance What you’ll need Expertise in Kotlin (coroutines, flows, DSLs, sealed classes, inline functions) Proficiency in Java for legacy codebases and interop Strong experience with Jetpack Compose for UI development Familiarity with Android Jetpack Components such as ViewModel, LiveData, Room, Navigation, WorkManager Understanding of MVVM, MVI, and Clean Architecture design patterns Experience with concurrency and asynchrony, specifically Kotlin Coroutines Competency in Dependency Injection using Hilt, Dagger 2, or Koin Skilled in Networking with Retrofit, OkHttp, WebSockets, and gRPC Experience with offline-first development using Room, SQLite, and caching strategies